Caesium nitrate, CsNO₃

The Caesium nitrate, CsNO₃ crystallizes in hexagonal prisms, isomorphous with the corresponding salts of rubidium and potassium; they melt at 407° C. or 414° C. At 20° C. its density is 3.643, and at 28° C. 3.687.

The solubility in water is given in the appended table:

Solubility of Caesium Nitrate

Temperature, °C	0	10	20	30	40	50	60	70	80	90	100
Grams of CsNO3 per 100 g. of water	9.33	14.9	23.0	33.9	47.2	64.4	83.8	107	134	163	197

The molecular electric conductivity of caesium nitrate between 446.6° and 556.3° C. is given by the formula

μ_t = 42.13+0.120(t - 450).

A saturated solution in contact with excess of the salt boils at 107.2° C. under 760 mm. pressure. Its solubility in absolute alcohol is very slight. With nitric acid it yields acid nitrates of the type CsNO₃,HNO₃, m.p. 100° C., and CsNO₃,2HNO₃, m.p. 32° to 36° C.